— 88 — 



Acid value 0.48 



Saponification value 190.1 



Iodine value 135.8 



Reichert-Meissl value 0.66 



Hehner value 95.89 



Viscosity (Engler's viscosimeter at 15°C.) 114.5 seconds. 



Physical and chemical constants of mixed fatty acids: — 



Specific gravity 0.9075 



Melting point 18°C. 



Solidifying point 11°C. 



Neutralization value 195.2 



Iodine value 137.84 



XI. Essential Oil of Yabunikkei Leaves 



The Yabunikkei (Cinnamomum pedunculatum Nees), from which the 

 oil is distilled, is a large tree growing along the Pacific coast of the 

 southern parts of Japan. The bark, roots, and leaves all contain volatile 

 oil. Dried leaves weighing 37.5 kilos produced 520 gr. of this volatile 

 oil on distillation with steam, being equivalent to 1.4% of the material used. 



The oil is mobile and has a fresh and pungent smell. It is almost 

 colorless just after distillation, but it takes a yellow color after standing 

 or on exposure to the sunlight. By cooling to -8°C. the oil becomes 

 milky. When distilled under atmospheric pressure, it begins to boil at 

 about 190°C. and continues to distill till the thermometer reaches 245° 

 being mostly distilled between 230°-240°C. By the addition of dilute ferric 

 chloride solution, the oil assumes a dark green color ; it does not decolorize 

 a fuchsin solution. The oil has the following constants: — 



Acid value 1.1 



Ester value 



Ester value after acetylation 821 



The phenol extracted from the oil by dilute caustic potash solution, 

 boils at 264°-267°C. and has a density dn= 1.0665, the melting point of the 

 benzoil compound is 65°C. 



